[Webkit-unassigned] [Bug 158342] Overlay with -webkit-overflow-scrolling:touch doesn't become scrollable after added text makes it taller

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158342

--- Comment #5 from Ali G <ali.ghassemi at gmail.com> ---
Simon,

Any chance this can become a P0/P1?

It really comes down to: "If a scrollable container does not initially have enough content to overflow, when it overflows later, it won't be scrollable" and that's a pretty bad bug IMO. 

We can try to detect when content starts overflowing and toggle '-webkit-overflow-scrolling' on and off which forces the scrolling logic to run again and fixes the issue but that's hard and non-performant thing to do in JS land.

Repro: https://s.codepen.io/aghassemi/debug/pxxaJj per previous comment

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